Investigators said the robber walked into the Bank of America branch near 77th Street and Quivira Road about 1 p.m. He showed a gun to the teller and announced his intentions to rob the bank.

The man got some cash and was last seen running away from the bank to the west.

Police said the robber was black, in his mid 30s, about 6 feet 2 inches tall, 195 pounds and had a slight mustache. He had on a green sweatshirt, khaki pants, black gloves and had a black bag with him. He was wearing a nylon stocking over his face.

Investigators released a surveillance image of the man later in the afternoon.